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A Statutory Biodiversity Metric was later introduced as part of the Environment Act as the legally mandated metric for use under the biodiversity net gain policy. This metric uses habitat as a proxy for biodiversity [60] by combining factors like area, habitat condition, distinctiveness, and multiple parameters (like risk, the time required for ...
The BNG policy requires a 10% net gain in biodiversity levels at a development site, measured using a 'Statutory Biodiversity Metric'. Habitat banks are suggested by Natural England as an off-site method for delivering biodiversity gains in advance of losses by creating and enhancing habitat, both on public or private lands. [44]
The National Environment Act 2019 requires no net loss (but preferably a net gain) as a goal for biodiversity offsets and biodiversity conservation in the country. [49] Before these legal requirements were introduced, a no net loss goal had been used by the World Bank as a lending requirement to fund a dam at Bujagali Falls in 2007. [50]
A Biodiversity Impact Credit (BIC) is a transferable biodiversity credit designed to reduce global species extinction risk. The underlying BIC metric, developed by academics working at Queen Mary University of London and Bar-Ilan University, is given by a simple formula that quantifies the positive and negative effects that interventions in nature have on the mean long-term survival ...
A variety of objective means exist to empirically measure biodiversity. Each measure relates to a particular use of the data, and is likely to be associated with the variety of genes. Biodiversity is commonly measured in terms of taxonomic richness of a geographic area over a time interval. In order to calculate biodiversity, species evenness ...
Goodhart's law is an adage often stated as, "When a measure becomes a target, it ceases to be a good measure". [1] It is named after British economist Charles Goodhart, who is credited with expressing the core idea of the adage in a 1975 article on monetary policy in the United Kingdom: [2]
For example, England's Biodiversity Net Gain policy requires that developers purchase biodiversity credits from the government if they are unable to achieve a 10% gain in biodiversity by creating or enhancing habitat on their development site. [44] Some entities might also purchase credits form these systems voluntarily. [45]
Nature-positive is a concept and goal to halt and reverse nature loss by 2030, and to achieve full nature recovery by 2050. [1] According to the World Wide Fund for Nature, the aim is to achieve this through "measurable gains in the health, abundance, diversity, and resilience of species, ecosystems, and natural processes."